15.64.62.3  ALL...    - This  selects which set of units to modify.  There
are 2 sets of units.  One is the TEXT units which specify the location  in
TEXT  space,  while  the other is used to specify the character and symbol
sizes.  The character units are also used  to  speicify  the  fill  sizes.
Normall  text  sizes are in inches while the character units are one tenth
of the text units.